.\"	$OpenBSD: EVP_PKEY_set1_RSA.3,v 1.4 2016/11/29 07:29:52 jmc Exp $
.\"	OpenSSL 9b86974e Aug 17 15:21:33 2015 -0400
.\"
.\" This file was written by Dr. Stephen Henson <steve@openssl.org>.
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.Dd $Mdocdate: November 29 2016 $
.Dt EVP_PKEY_SET1_RSA 3
.Os
.Sh NAME
.Nm EVP_PKEY_set1_RSA ,
.Nm EVP_PKEY_set1_DSA ,
.Nm EVP_PKEY_set1_DH ,
.Nm EVP_PKEY_set1_EC_KEY ,
.Nm EVP_PKEY_get1_RSA ,
.Nm EVP_PKEY_get1_DSA ,
.Nm EVP_PKEY_get1_DH ,
.Nm EVP_PKEY_get1_EC_KEY ,
.Nm EVP_PKEY_assign_RSA ,
.Nm EVP_PKEY_assign_DSA ,
.Nm EVP_PKEY_assign_DH ,
.Nm EVP_PKEY_assign_EC_KEY ,
.Nm EVP_PKEY_id ,
.Nm EVP_PKEY_base_id ,
.Nm EVP_PKEY_type
.Nd EVP_PKEY assignment functions
.Sh SYNOPSIS
.In openssl/evp.h
.Ft int
.Fo EVP_PKEY_set1_RSA
.Fa "EVP_PKEY *pkey"
.Fa "RSA *key"
.Fc
.Ft int
.Fo EVP_PKEY_set1_DSA
.Fa "EVP_PKEY *pkey"
.Fa "DSA *key"
.Fc
.Ft int
.Fo EVP_PKEY_set1_DH
.Fa "EVP_PKEY *pkey"
.Fa "DH *key"
.Fc
.Ft int
.Fo EVP_PKEY_set1_EC_KEY
.Fa "EVP_PKEY *pkey"
.Fa "EC_KEY *key"
.Fc
.Ft RSA *
.Fo EVP_PKEY_get1_RSA
.Fa "EVP_PKEY *pkey"
.Fc
.Ft DSA *
.Fo EVP_PKEY_get1_DSA
.Fa "EVP_PKEY *pkey"
.Fc
.Ft DH *
.Fo EVP_PKEY_get1_DH
.Fa "EVP_PKEY *pkey"
.Fc
.Ft EC_KEY *
.Fo EVP_PKEY_get1_EC_KEY
.Fa "EVP_PKEY *pkey"
.Fc
.Ft int
.Fo EVP_PKEY_assign_RSA
.Fa "EVP_PKEY *pkey"
.Fa "RSA *key"
.Fc
.Ft int
.Fo EVP_PKEY_assign_DSA
.Fa "EVP_PKEY *pkey"
.Fa "DSA *key"
.Fc
.Ft int
.Fo EVP_PKEY_assign_DH
.Fa "EVP_PKEY *pkey"
.Fa "DH *key"
.Fc
.Ft int
.Fo EVP_PKEY_assign_EC_KEY
.Fa "EVP_PKEY *pkey"
.Fa "EC_KEY *key"
.Fc
.Ft int
.Fo EVP_PKEY_id
.Fa "EVP_PKEY *pkey"
.Fc
.Ft int
.Fo EVP_PKEY_base_id
.Fa "EVP_PKEY *pkey"
.Fc
.Ft int
.Fo EVP_PKEY_type
.Fa "int type"
.Fc
.Sh DESCRIPTION
.Fn EVP_PKEY_set1_RSA ,
.Fn EVP_PKEY_set1_DSA ,
.Fn EVP_PKEY_set1_DH ,
and
.Fn EVP_PKEY_set1_EC_KEY
set the key referenced by
.Fa pkey
to
.Fa key .
.Pp
.Fn EVP_PKEY_get1_RSA ,
.Fn EVP_PKEY_get1_DSA ,
.Fn EVP_PKEY_get1_DH ,
and
.Fn EVP_PKEY_get1_EC_KEY
return the key referenced in
.Fa pkey
or
.Dv NULL
if the key is not of the correct type.
.Pp
.Fn EVP_PKEY_assign_RSA ,
.Fn EVP_PKEY_assign_DSA ,
.Fn EVP_PKEY_assign_DH ,
and
.Fn EVP_PKEY_assign_EC_KEY
also set the referenced key to
.Fa key ;
however these use the supplied
.Fa key
internally and so
.Fa key
will be freed when the parent
.Fa pkey
is freed.
.Pp
.Fn EVP_PKEY_base_id
returns the type of
.Fa pkey .
For example, an RSA key will return
.Dv EVP_PKEY_RSA .
.Pp
.Fn EVP_PKEY_id
returns the actual OID associated with
.Fa pkey .
Historically keys using the same algorithm could use different OIDs.
For example, an RSA key could use the OIDs corresponding to the NIDs
.Dv NID_rsaEncryption
(equivalent to
.Dv EVP_PKEY_RSA )
or
.Dv NID_rsa
(equivalent to
.Dv EVP_PKEY_RSA2 ) .
The use of alternative non-standard OIDs is now rare, so
.Dv EVP_PKEY_RSA2
et al. are not often seen in practice.
.Pp
.Fn EVP_PKEY_type
returns the underlying type of the NID
.Fa type .
For example,
.Fn EVP_PKEY_type EVP_PKEY_RSA2
will return
.Dv EVP_PKEY_RSA .
.Pp
Most applications wishing to know a key type will simply call
.Fn EVP_PKEY_base_id
and will not care about the actual type,
which will be identical in almost all cases.
.Pp
In accordance with the OpenSSL naming convention, the key obtained from
or assigned to
.Fa pkey
using the
.Sy 1
functions must be freed as well as
.Fa pkey .
.Pp
.Fn EVP_PKEY_assign_RSA ,
.Fn EVP_PKEY_assign_DSA ,
.Fn EVP_PKEY_assign_DH ,
and
.Fn EVP_PKEY_assign_EC_KEY
are implemented as macros.
.Sh RETURN VALUES
.Fn EVP_PKEY_set1_RSA ,
.Fn EVP_PKEY_set1_DSA ,
.Fn EVP_PKEY_set1_DH ,
and
.Fn EVP_PKEY_set1_EC_KEY
return 1 for success or 0 for failure.
.Pp
.Fn EVP_PKEY_get1_RSA ,
.Fn EVP_PKEY_get1_DSA ,
.Fn EVP_PKEY_get1_DH ,
and
.Fn EVP_PKEY_get1_EC_KEY
return the referenced key or
.Dv NULL
if an error occurred.
.Pp
.Fn EVP_PKEY_assign_RSA ,
.Fn EVP_PKEY_assign_DSA ,
.Fn EVP_PKEY_assign_DH ,
and
.Fn EVP_PKEY_assign_EC_KEY
return 1 for success and 0 for failure.
.Pp
.Fn EVP_PKEY_base_id ,
.Fn EVP_PKEY_id ,
and
.Fn EVP_PKEY_type
return a key type or
.Dv NID_undef
(equivalently
.Dv EVP_PKEY_NONE )
on error.
.Sh SEE ALSO
.Xr EVP_PKEY_new 3 ,
.Xr RSA_new 3
